The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 25, 2003
Filed:
Sep. 28, 2001
Applicant:
Inventors:
Assignee:
Toyo Radiator Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F28F 9/04 ;
U.S. Cl.
CPC ...
F28F 9/04 ;
Abstract
A header pipe is prepared by severing an elongated round pipe to a desired length, forming an engagement recess in the inner surfaces at opposite open ends, and forming a multiplicity of flat holes in the peripheral surfaces. A flat tube is inserted into each of the flat holes with fins fixedly secured to the outer surfaces thereof to thereby construct a core End members such as the end portion of a port pipe and an end cover are fitted to the openings of the header pipe by way of an O-ring for sealing, to complete a module-type heat exchanger.